- Source: Anthotype
- Anthotype
- List of photographic processes
- Photograph
- Alternative process
- Antho-
- Cyanotype
- John Herschel
- Outline of photography
- Robert Jefferson Bingham
Artikel: Anthotype GudangMovies21 Rebahinxxi
An anthotype (from Greek άνθος anthos "flower" and τύπος týpos "imprint", also called Nature Printing) is an image created using photosensitive material from plants under the influence of light (e.g. UV light, rays of sun).
An emulsion is made from crushed flower petals or any other light-sensitive plant, fruit or vegetable.
A sheet of paper is covered with the emulsion, and then it is dried.
Some leaves, a transparent photo positive or other material is placed on the paper; and then it is exposed to direct full sunlight until the image part not covered by the material is bleached out by the sun rays.
The original color remains in the shadowed parts depending on the exposure. The paper remains sensitive against such rays. It cannot be fixed.
Note: The color of anthocyanidins, anthocyans, carotinoids, and other light sensitive plant material may depend on PH of the water and of the paper.
History
The photo-sensitive properties of plants and vegetables have been known to scholars for centuries. Among many early observations the experiments of Henri August Vogel in Paris are of particular interest. In 1816 he discovered that an alcoholic tincture of either red carnations, violets or corn poppy turned white behind blue glass in a few days, while it remained unchanged behind red glass after about the same time. Cotton and paper colored with these tinctures exhibited the same differences.
The anthotype process was discovered in 1839 by Sir John Herschel. Herschel referenced an experiment on October 11, 1839 in a paper published in 1840 at the Philosophical Transactions of the Royal Society of London. Herschel gave the anthotype process a proper introduction in his 1842 paper to the same institution. Mary Somerville built on Herschel's research and documented it in a letter to him dated 1845. Sir John Herschel presented her findings to the Royal Society, giving her full credit in his 1845 paper.
Herschel's research into making photographic images from flowers was limited and was ultimately abandoned since no commercial application was feasible from a process which takes days to produce an image.
The process continued to be listed in photographic literature of the time but was likely little used.
Over time the process earned a reputation for being too impractical. Image permanence have been brought into question, but this problem seems to be mostly related to choice of flower or plant matter.
How it works
From an examination of the researches of Sir John Herschel on the coloring matter of plants, it will be seen that the action of the sun's rays is to destroy the color, effecting a sort of chromatic analysis, in which two distinct elements of color are separated, by destroying the one and leaving the other. The action is confined within the visible spectrum, and thus a broad distinction is exhibited between the action of the sun's rays on vegetable juices and on argentine compounds, the latter being most sensibly affected by the invisible rays beyond the violet.
It may also be observed, that the rays effective in destroying a given tint, are in a great many cases, those whose union produces a color complementary to the tint destroyed, or, at least, one belonging to that class of colors to which such complementary tint may be preferred. For instance, yellows tending towards orange are destroyed with more energy by the blue rays; blues by the red, orange and yellow rays; purples and pinks by yellow and green rays.
Other flower suggestions
Henry H. Snelling writes based on his research: "Viola odorata--or sweet scented violet, yields to alcohol a rich blue color, which it imparts in high perfection to paper. Senecio Splendens -- or double purple groundsel, yields a beautiful color to paper."
Bingham, quoting by Sir John Herschel, recommends Corchorus japonicus flower (japanese Jute) for a "fine yellow colour" that "upon exposure to sunlight, it is in about half an hour rendered quite white".
References
External links
Snelling, Henry H. The History and Practice of the Art of Photography. New York, 1849. on Gutenberg
The anthotype process described at alternative photography
Kata Kunci Pencarian:
Artikel Terkait "anthotype"
Anthotypes – instructions to making a print using plants
09 Mei 2021 · Using the anthotype process, it is possible to print photographs using nothing but juice extracted from the petals of flowers, the peel from fruits and pigments from plants. We’ll share instructions for making anthotypes.
Anthotype - Wikipedia
An anthotype (from Greek άνθος anthos "flower" and τύπος týpos "imprint", also called Nature Printing) is an image created using photosensitive material from plants under the influence of light (e.g. UV light, rays of sun).
Print your own images using turmeric and sunlight - Popular Science
25 Jun 2021 · Anthotype is a technique developed in the 19th century that uses plant emulsions and sunlight to create pictures on paper and cloth.
Anthotypes for everyone - AlternativeProcesses
17 Jun 2022 · Anthotypes, or making photographs out of plants’ juices, is a process that originated around the same time as cyanotypes. In fact the process was discovered by Mary Sommerville in 1842, who presented her findings to Sir John Herschel, the …
Making Pictures from Plants: Contemporary Anthotypes - RI Center
17 Mar 2022 · Magical and engaging, anthotypes are photographic images made using light sensitive juices extracted from crushed flower petals, berries, and leaves. The plant-based emulsion is applied to artist’s paper, dried, then exposed to the sun for days, even weeks.
Anthotypes: Printing with Light and Plant Dyes - Heriot-Watt …
Anthotype is a photographic image obtained by using plant dyes (photosensitive pigments in plants), without the need for cameras, lenses, inks, lasers and specialized equipment. Dyes of different colours can be obtained depending on which …
The history of anthotypes – AlternativePhotography.com
07 Apr 2021 · Researches on Light includes a good chapter on anthotypes. Plants have been used as medicine, but also as poison. There is the famous example of hemlock (Conium maculatum) used for poisoning the Greek philosopher Socrates. The discovery and use of plants and flowers in photography is more carefully mapped.
The anthotype process – AlternativePhotography.com
16 Feb 2022 · Anthotypes are a beautiful way to create fine art images right from your garden. This long neglected process, originally published by Sir William Herschel in 1842, is simple yet elegant. An emulsion is made from crushed flower petals …
Anthotype: Resources for Making Pictures from Plants - RI Center
29 Jul 2022 · Anthotype is a green and sustainable photographic process that dates back to Victorian England and the birth of photography. Mostly abandoned for faster and more easily controlled processes, anthotype images are created using photosensitive material from plants.
Alternative Processes: Anthotype · Lomography
18 Sep 2015 · Invented by the same man who came up with the cyanotype, Sir William Herschel, the anthotype process involves an emulsion made of extracts from flower petals, berries, plants, vegetables, and other light-sensitive materials from nature. The images produced are in one color, much like the cyanotype, and will depend on the material used.